Photoshop: How do I remove cross-hairs from my document (color samplers)?

I discovered an odd bug in PS CC (Version: 2017.1.1 20170425.r.252 2017/04/25:23:00:00 CL 1113967 x64, to be exact). I opened an image and made a complex selection with various selection tools, inverted the selection, and applied the burn tool to parts of the image. Somewhere in the process, a cross-hairs with the character "1" below it appeared on the image and I could not get rid of it. I have attached a crop of a screen grab that shows the cross-hairs. I saved the image, closed PS, re-started it, re-opened the image, and the cross-hairs re-appears in the same location. It is permanently attached to the image. The cross-hairs only appears within Photoshop as far as I can tell. When posting the image online, or including it in an email, or opening it in another image processing program, it is not present. Sothis is purely a Photoshop artifact.

I am not sure if this forum is the right or best way to report a bug, so if there is another way, please let me know. The bug is not serious but it can serve to confuse the user.

The screen grab showing the crosshairs:

Here is a link to the image file containing whatever causes PS to display the cross-hairs. You need to change the extension to jpg before opening it. If I had not changed the extension before uploading, Dropbox would have treated it as a standard JPG and whatever causes the crosshairs to appear in Photoshop would have been eliminated. After changing the extension back to jpg and opening it in PS - or at least in the same version as mine - the crosshairs should appear. I haven't verified this with anyone else so if someone could try it and let me know, it would be appreciated. Thanks.

Looks like a color sampler. If you click and hold on the Eyedropper tool, you'll see Color Sampler tool. If you select that tool, you'll a "Clear All" button on the tool options bar at the top of the screen, this will clear your sampler. Saving as a JPG loses all of the Photoshop related metadata stored with the image.